Question

If
a=2, b=-11.c=15. Find the value of
C,
(b)2-4ac​

Answer 1

Step-by-step explanation:

b²-4ac

-11²-4.2.15

121-120=1

Answer 2

The value of b² - 4ac = 1

Given :

The expression b² - 4ac

To find :

The value of b² - 4ac for a = 2, b = -11, c = 15

Solution :

Step 1 of 2 :

Write down the given expression

The given expression is b² - 4ac

Step 2 of 2 :

Find the value

The given expression is b² - 4ac

Putting a = 2, b = -11, c = 15 we get

$\sf {b}^{2} - 4ac$

$\sf = {( - 11)}^{2} - 4 \times 2 \times 15$

$\sf = 121 - 120$

$\sf = 1$

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